2010CBET.2479....1G

David Grennan, Raheny (Dublin), Ireland, reports his discovery of an apparent supernova (mag approximately 18.7 at discovery) on an unfiltered CCD image (limiting mag 19.5) taken on Sept. 17.9416 UT with a 0.36-m Schmidt- Cassegrain telescope. The new object is located at R.A. = 0:12:07.48 ± 0s.01, Decl. = +41:45:24.6 ± 0".3 (equinox 2000.0), which is approximately 1".2 west and 10".6 north of the center of UGC 112. Nothing is visible at this position on Palomar Sky Survey red and blue plates (limiting mag 19.5). Additional magnitudes for 2010ik from Grennan: 2010 Aug. 20, [19.2; Sept. 20.887, 19.5 (limiting mag 20.4); 29.840, 18.7 (limiting mag 19.8). Ron Arbour (South Wonston, Hants, U.K., 0.40-m f/4 reflector) reports the following CCD magnitudes (unfiltered unless noted otherwise) for 2010ik: Sept. 18.829, 17.7 (poor conditions with clouds and bright moonlight; limiting mag about 18.1; position end figures 07s.45, 24s.8); 29.851, V = 18.5 (limiting mag 20.3; position end figures 07s.45, 24".7); Oct. 1.876, 18.1 (limiting mag 20.4; position end figures 07s.50, 24".5; offset 13".8 west, 10".9 north). Martin Mobberley, Suffolk, U.K., reports that 2010ik appeared at unfiltered CCD mag 18.5 on an image taken on Sept. 29.828 using a 0.43-m f/6.8 Cassegrain reflector located at Nerpio Observatory, Spain. T. Boles, Coddenham, England, reports mag 20.1 for 2010ik (and position end figures 07s.8, 24".3; offsets 10".7 west and 11".2 north; limiting mag 21.0) on Sept. 20. Boles' image has been posted at website URL http://www.supernova.myzen.co.uk/images/ugc112-marked.jpg.